Priyanka B Solutions for Chapter: Magnetic Effects of Electric Current, Exercise 5: NCERT Exemplar Problems

Choose the incorrect statement:

A constant current flows in a horizontal wire in the plane of the paper from east to west as shown in figure below. The direction of magnetic field at a point will be north to south:

The strength of magnetic field inside a long current-carrying straight solenoid is:

To convert an A.C. generator into D.C. generator:

The most important safety method used for protecting home appliances from short circuiting or overloading is:

Explain the phenomenon of electromagnetic induction. Describe an experiment to show that a current is set up in a closed loop when an external magnetic field passing through the loop increases or decreases.

Describe the working of an A.C. generator with the help of a labelled circuit diagram. What changes must be made in the arrangement to convert it to a D.C. generator?

Draw an appropriate schematic diagram showing common domestic circuits and discuss the importance of fuse. Why is it that a burnt out fuse should be replaced by another fuse of identical rating?